ALAMEDA -- The Raiders didn't have to look far to find a new starting cornerback, signing Tarell Brown away from the 49ers on Friday as general manager Reggie McKenzie continued to remake his defense.

The Raiders also announced the signing of Antonio Smith, a 10-year veteran who played the past five seasons with the Houston Texans. Smith, who played as an end in a 3-4 defense, will move inside and be a tackle to go along with ends Justin Tuck and LaMarr Woodley, who arrived in free agency Thursday.

A seven-year veteran, Brown started for the 49ers for the past three seasons at right cornerback, during which time the team went 36-11. He has played in 100 games with 47 starts.

Brown, 29, reportedly signed a one-year contract for a fully guaranteed $3.5 million. The 49ers, who late last season signed cornerback Tramaine Brock to a $14 million contract with $7 million guaranteed, were content to let Brown walk.

"They're looking to get younger and bring in other guys. You can't fault them for that," Brown said in a conference call with Bay Area reporters. "I understand this is a business, and I treat it as such and, like I said, I look forward to being here and starting a new culture here."

Both of last season's starting cornerbacks, Tracy Porter and Mike Jenkins, played on one-year contracts. Porter signed with the Washington Redskins, while Jenkins is still on the market.

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The plan is to pair Brown with DJ Hayden, the Raiders' first-round draft pick in 2013. Hayden's rookie year was beset with physical problems that began with an operation to repair a ruptured blood vessel leading to his heart while at the University of Houston.

"I think Hayden is a great talent, a guy with a lot of speed and has all the athletic ability and can play this game," Brown said. "The big thing for him is just to be around guys that can help mold him and bring him along and help him turn into a true professional."

A selling point for Brown was the presence of Raiders defensive coordinator Jason Tarver, who was a 49ers defensive assistant for six seasons.

"Me and JT have always had a great relationship," Brown said. "He has always been a coach I looked up to with the knowledge he was giving me as a younger player first coming into the league. He sees the game the way I kind of see it."

Smith played in 15 games last season with five sacks, and has 41﻿1/2 for his career. From 2006 through 2012, Smith, 6-foot-4, 289 pounds, did not miss a game. His contract was reportedly for two years and $9 million.

Returning home to be with his expectant wife, Smith, 32, was unavailable by conference call. But based on what he said in video produced by the club, he will bring some life to the locker room.

"What do I bring to the team? The many faces of Antonio, that's what I bring to the team," Smith said. "There's a lot of them: cowboy, soothsayer, ninja. I'm just an all-round everything, a jack of all trades."

The Raiders also played host to left tackle Donald Penn, a veteran of 112 games and 108 starts. Penn, due $6.25 million this year from the Tampa Bay Buccaneers, was released after the club signed Anthony Collins to play left tackle.

When the Raiders' agreement with tackle Rodger Saffold fell through because of a failed physical, Penn was flown in on the same day he was released. The Raiders did not have deal in place, however, and Penn was scheduled to visit the Washington Redskins on Saturday.

Another tackle who was set to visit the Raiders on Saturday, Michael Oher (Baltimore Ravens), signed a four-year contract with the Tennessee Titans worth $20 million.

Defensive tackle Vance Walker, who started 15 games for the Raiders last season on a one-year contract, reportedly reached agreement on a three-year contract with the Kansas City Chiefs.